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Earthquake Hazards Program


Thursday, October 01, 2009 at 01:52:27 UTC

Theoretical P-Wave Travel Times

Theoretical P-wave Travel Times

This map shows the predicted (theoretical) travel times, in minutes, of the compressional (P) wave from the earthquake location to points around the globe. The travel times are computed using the spherically-symmetric IASP91 reference earth velocity model. The heavy black lines shown are the approximate distances to the P-wave shadow zone (103 to 140 degrees).

Theoretical P-Wave Travel Times
City Distance
Travel Time
Arrival Time
Kathmandu, Nepal 33.91 6:40.9 1:59:10.9P
Beijing, China 44.38 8:08.2 2:00:38.2P
Agana, Guam 45.64 8:18.3 2:00:48.3P
Tokyo, Japan 52.09 9:07.8 2:01:37.8P
Brisbane, Australia 54.96 9:28.8 2:01:58.8P
Nairobi, Kenya 64.7610:36.3 2:03:06.3P
Wellington, New Zealand 75.7011:43.3 2:04:13.3P
Moscow, Russia 77.7611:54.9 2:04:24.9P
Rome, Italy 91.0213:02.0 2:05:32.0P
Bergen, Norway 95.3113:21.7 2:05:51.7P
London, England 99.3213:39.7 2:06:09.7Pdiff
Honolulu, Hawaii 100.7413:46.0 2:06:16.0Pdiff
Anchorage, Alaska 101.0613:47.4 2:06:17.4Pdiff
Palmer Station, Antarctica 109.1214:23.2 2:06:53.2Pdiff
Seattle, Washington 121.1715:16.7 2:07:46.7Pdiff
San Francisco, California 126.5815:40.7 2:08:10.7Pdiff
Los Angeles, California 131.3916:02.0 2:08:32.0Pdiff
Duluth, Minnesota 134.3616:15.2 2:08:45.2Pdiff
Golden, Colorado 135.6816:21.1 2:08:51.1Pdiff
Phoenix, Arizona 135.9816:22.4 2:08:52.4Pdiff
Bangor, Maine 137.0716:27.2 2:08:57.2Pdiff
Ottawa, Canada 137.2416:28.0 2:08:58.0Pdiff
Albuquerque, New Mexico 138.3316:32.8 2:09:02.8Pdiff
Boston, Massachusetts 139.8516:39.6 2:09:09.6Pdiff
Wichita, Kansas 140.8716:44.1 2:09:14.1Pdiff
New York, New York 141.8016:48.2 2:09:18.2Pdiff
St. Louis, Missouri 142.4516:51.1 2:09:21.1Pdiff
Philadelphia, Pennsylvania 142.6516:52.0 2:09:22.0Pdiff
Washington, D.C. 143.8016:57.1 2:09:27.1Pdiff
Knoxville, Tennessee 146.1719:37.2 2:12:07.2PKPbc
Brownsville, Texas 150.3819:44.5 2:12:14.5PKPdf
Mexico City, Mexico 153.6519:49.6 2:12:19.6PKPdf
Miami, Florida 156.8519:54.1 2:12:24.1PKPdf
San Juan, Puerto Rico 160.1319:58.3 2:12:28.3PKPdf
Lima, Peru 165.4020:03.7 2:12:33.7PKPdf

Travel Time Information and Calculator

Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver

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